Data for "Proposal of an algorithm-independent definition of effective contour length (EL) and its impacts on pixel-scale specific catchment area (SCA)"

This dataset is used for the paper of "Proposal of an algorithm-independenat definition of effective contour length (EL) and its impacts on pixel-scale specific catchment area (SCA)". Therein, 'ellipsoid.txt', 'inverse ellipsoid.txt' and 'Saddle.txt' record the DEMs discretized from ellipsoid, inverse ellipsoid and saddle, respectively. 'Real-world DEM' records the DEM of the YiLuo River basin with a horizontal resolution of 100m and vertical resolution of 1m本数据集用于支撑题为《有效等高线长度（EL）的算法无关定义及其对像素尺度比汇水区面积（SCA）的影响》的研究论文。其中，'ellipsoid.txt'、'inverse ellipsoid.txt'与'Saddle.txt'分别记录了从椭球面、反椭球面以及鞍面离散得到的数字高程模型（Digital Elevation Model, DEM）。'Real-world DEM'则收录了水平分辨率为100米、垂直分辨率为1米的伊洛河流域数字高程模型。